Class 12PhysicsMoving Charges and MagnetismAmpere’s circuital law and its application (Solenoid and Toroid)
Easy$A$ long solenoid of radius $1\,mm$ has $100$ turns per $mm$. If $1\,A$ current flows in the solenoid,the magnetic field strength at the centre of the solenoid is:
- A$12.56 \times 10^{-2}\,T$
- B$12.56 \times 10^{-4}\,T$
- C$6.28 \times 10^{-4}\,T$
- D$6.28 \times 10^{-2}\,T$
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